GatorMIM and Gator Star
User’s Guide
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v
vi
Chapter 1 Introduction
Using the GatorMIM CS/GatorStar GX-M User’s Guide.......................................1-2
Related Manuals............................................................................................................ 1-2
Software Conventions..................................................................................................1-3
Using the Mouse.................................................................................................... 1-3
Common Gator Module Window Fields............................................................1-4
Using Window Buttons.........................................................................................1-5
Getting Help ..................................................... ..... ...... ...... ..... ....................................... 1-5
Using On-Line Help..............................................................................................1-5
Accessing On-line Documentation......................................................................1-6
Getting Help from the Global Technical Assistance Center............................1-6
Chapter 2 The Gator Module View
Viewing Device Information.......................................................................................2-2
Front Panel Information........................................................................................2-3
Menu Structure....................................................................................................... 2-4
Gator Module Port Status Display .......................................... ...... ...................... 2-6
The Chassis Manager Window............................................................................ 2-6
Viewing Hardware Types.....................................................................................2-7
Viewing the Device Type...............................................................................2-7
Viewing the Module Type ............................................................................. 2-7
Viewing the Port Type....................................................................................2-8
Viewing I/F Summary Information.................................................................... 2-8
Interface Performance Statistics/Bar Graphs.............................................2-9
Viewing Interface Detail...............................................................................2-11
Making Sense of Detail Statistics......................................................... 2-13
Enabling and Disabling Ports.................................................................................... 2-14
Contents
Chapter 3 LocalTalk and GatorStar Statistics
Viewing LocalTalk Statistics ........................................................................................3-1
Gator Total Repeater Statistics .................................................................................... 3-3
Index
vii
Contents
viii
Introduction
How to use this guide; related guides; software conventions; getting help
Welcome to the GatorMIM CS and GatorStar GX-M User’s Guide. We have
designed this guide to serve as a reference for using NetSight Element Manager
for the GatorMIM CS and the GatorStar GX-M.
The GatorMIM CS and GatorStar GX-M are LocalTalk to Ethernet routers—based
on Cayman Systems’ GatorBOX-CS technology—which are integrated for use in
the MMAC series of intelligent hubs.
The GatorMIM CS is a LocalTalk router module for the MMAC hub, providing
routing connectivity between LocalTalk and Ethernet topologies with AppleTalk
and DECnet routing capabilities, with no configuration re quired.
Chapter 1
The GatorStar GX-M is a single module designed to plug into the MMAC hub,
providing plug-and-play routing between LocalTalk and Ethernet networks, with
no configuration required. It integrates the LocalTalk-Ethernet gateway with the
24-port LocalTalk SmartRepeater. GatorStar GX-M’s SmartRepeater technology
provides automatic detection and correction of “jabbering” on LocalTalk ports,
and determines the location of individual nodes for each port, allowing network
management and mapping programs to determine the location and traffic of
every node on your LocalTalk network.
Both the GatorStar GX-M and the GatorMIM CS support LocalTalk Statistics and
the SNMP System Group. The GatorStar also supports GatorStar Statistics. The
GatorStar GX-M can support up to 96 users; the GatorMim CS up to 32 users.
1-1
Introduction
Using the GatorMIM CS/GatorStar GX-M
User’s Guide
Each chapter in this guide describes one major functionality or a collection of
several smaller functionalities of the GatorMIM CS and the Ga torStar GX -M. This
guide contains information about software functions which are accessed directly
from the device icon.
The GatorStar GX-M and the GatorMIM CS will be jointly referred to as the Gator
NOTE
Module throughout much of this manual. Where there are differences, each device will be
named separately, as necessary.
Chapter 1, Introduction, provides a list of related documentation, describes
certain software conventions, and shows yo u ho w to c o nt a c t t h e Gl ob a l Technical
Assistance Center.
Chapter 2, The Gator Module View, describes the visual display of the Gator
module in the chassis and explains how to use the mouse within the Chassis
View.
Chapter 3, LocalTalk and GatorStar Statistics, describes both the LocalTalk and
Gator Total Repeater Statistics windows, and defines the various packets and
errors forwarded across the GatorMIM CS and GatorStar GX-M as well as the
total repeater statistics counted by the GatorStar GX-M.
Related Manuals
The GatorMIM and GatorStar User’s Guide is only part of a complete document
set designed to provide comprehensive information about the features available
to you through NetSight Element Manager. Other guides which include
important information related to managing the Gator Module are as follows:
User’s Guide
Tools Guide
Remote Administration Tools User’s Guide
Alarm and Event Handling User’s Guide
For more information about the capabilities of the Gator Module, con sult the
appropriate hardware doc u mentation.
1-2 Using the GatorMIM CS/GatorStar GX-M User’s Guide
Software Conventions
Your NetSight Element Manager’s device user interface contains a number of
elements common to most windows and which operate the same regardless of the
window in which they appear. A brief description of some of the most common
elements appears below. The information provided here is not repeated in the
descriptions of specific windows and/or functions.
Using the Mouse
This document assumes you are using a Windows-compatible mouse with two
buttons; if you are using a three button mouse, you should ignore the operation of
the middle button when following procedures in this document. Procedures
within the NetSight Element Manager document set refer to these buttons as
follows:
Introduction
Left Mouse Button
Right Mouse Button
Figure 1-1. Mouse Buttons
For many mouse operations, this document assumes that the left (primary) mouse
button is to be used, and references to activating a menu or button will not
include instructions about which mouse button to use.
However, in instances in which right (secondary ) m ouse button functionality is
available, instructions will explic itly refer to right mouse button usage. Also, in
situations where you may be switching between mouse buttons in the same area
or window, instru ctions may also explicitly refer to both left and right mouse
buttons.
Instructions to perform a mouse operation include the following terms:
• Pointing means to position the mouse cursor over an area without pressing
either mouse button.
• Clicking means to position the mouse pointer over the indicated target, then
press and release the appropriate mouse button. This is most commonly used
to select or activate objects, such as menus or b uttons.
Software Conventions 1-3
Introduction
• Double-clicking means to position the mouse pointer over the indicated
target, then press and release the mouse button two times in rapid succession.
This is commonly used to activate an object’s default operation, such as
opening a window from an icon. Note that there is a distinction made between
“click twice” and “double-click,” since “click twice” implies a slower motion.
• Pressing means to position the mouse pointer over the indicated target, then
press and hold the mouse button until the de scribed action is completed. It is
often a pre-cursor to Drag operations.
• Dragging means to move the mouse pointer across the screen while holding
the mouse button down. It is often used for drag-and-drop operations to copy
information from one window of the screen into another, and to highlight
editable text.
Common Gator Module Window Fields
Similar descriptive information is displayed in boxes at the top of most Gator
Module windows in NetSight Element Manager, as illustrated in Figure 1-2.
Device
Name
IP Addres s
MAC
Address
Figure 1-2. Sample Wind o w Showing Informational Boxe s
Device Name
Displays the user-defined name of the device. The device name can be changed
via the System Group window; see the Gener ic SNMP User’s Guide for details.
IP Address
Displays the device’s IP (Internet Protocol) Address; this will be the IP address
used to define the device icon. IP addresses are assigned via local management for
the Gator Modules; they cannot be changed via NetSight Element Manager.
1-4 Software Conventions
MAC Address
Displays t he manufa cturer-set MAC address of t h e device interface. T his address
is factory-set and cannot be altered.
Using Window Buttons
The Cancel button that appears at the bottom of most windows allows you to exit
a window and terminate any unsaved changes you have made. You may also
have to use this button to close a window after you have made any necessary
changes and set them by clicking on an OK, Set, or Apply button.
An OK, Set, or Apply button appears in windows that have configurable values;
it allows you to confirm and SET changes you have made to those values. In some
windows, you may have to use this button to confirm each individual set; in other
windows, you can set several values at once and confirm the sets with one click
on the button.
The Help button brings up a Help text box with informat ion specific to the
current window. For more information concerning Help buttons, see Getting
Help, page 1-5.
Introduction
The command buttons, for example Bridge, call up a menu listing the wind ows,
screens, or commands available for that topic.
Any menu topic followed by ... (three dots) — for example Statistics... — calls up
a window or screen associated with that topic.
Getting Help
This section describes different methods of getting help for questions or concerns
you may have while using NetSight Element Manager.
Using On-Line Help
You can use the Gator Module window Help buttons to obtain in fo rmation
specific to the device. When you click on a Help button, a window will appear
which contains context-sensitive on- screen docume ntation that will assist you in
the use of the windows and their associated command and menu options. Note
that if a Help button is grayed out, on-line help has not yet been implemented for
the associated window.
From the Help menu accessed from the Module View window menu bar, you can
access on-line Help specific to the Module Vi ew window, as well as bring up the
Chassis Manager window for reference. Refer to Chapter 2, The Gator Module
View, for information on the Module View and Chassis Manager windows.
Getting Help 1-5
Introduction
All of the online help windows use the standard Microsoft Windows help facility. If you
NOTE
are unfamiliar with this feature of Windows, you can select Help from the Windows
Start menu, or Help —> How to Use Help from the primary NetSight Element
Manager window.
Accessing On-line Documentation
The complete suite of documents available for NetSight Element Manager can be
accessed via a menu option available from the primary window menu bar:
Help—>Online Documents. If you chose to install the documentation when you
installed NetSight Element Manager, selecting this option will launch Adobe’s
Acrobat Reader and a menu file which provides links to all other available
documents.
If you have not yet installed the documentati o n, the Online Documents option will not
TIP
be accessible from the menu file; in order to activate this option, you must ru n the
setup.exe again to install the documentation component. See your Installation Guide
for details.
Getting Help from the Global Technical Assistance Center
If you need technical support related to NetSight Element Manager, contact the
Global Technical Assistance Center via one of the following meth ods:
By phone: (603) 332-9400
24 hours a day, 365 days a year
By fax: (603) 337-3075
By mail: Enterasys Networks
Technical Support
35 Industrial Way
Rochester, NH 03867
By e-mail: support@enterasys.com
FTP: ftp.ctron.com (134.141.197.25)
Login anonymous
Password your e-mail address
By BBS: (603) 335-3358
Modem Setting 8N1: 8 data bits, 1 stop bit, No parity
1-6 Getting Help
NOTE
Introduction
Send your questions, comments, and suggestions regarding NetSight
documentation to NetSight Technical Communications via the following e-mail
address:
Netsight_docs@enterasys.com
To locate product specific information, refer to the Enterasys Web site:
http://www.enterasys.com
For the highest firmware versions successfully tested with NetSight Element Manager
2.2.1, refer to the Readme file available from the NetSight Element Manager 2.2.1 program
group. If you have an earlier version of firmware and experience problems, contact the
Global Technical Assistance Center.
Getting Help 1-7
Introduction
1-8 Getting Help
Chapter 2
The Gator Module View
Information displayed in the Module View window; Chassis Manager window; enabling and disabling
ports
The Gator Module V iew window is th e main screen that immediately informs you
of the current configuration of the ports on your Gator Module. Because the Gator
Module functions as a stand-alone IMIM (Intelligent Media Interface Module),
other MIMs in the MMAC chassis will not be visible. The default Logical View
displays the condition of individual ports on the Gator Module; the Physical View
provides a graphical representation of the actual board face. The Module View
window serves as a single point of access to all other Gator Module windows,
which are discussed at length in the following chapter.
To access the Gator Module View window, use one of the following options:
1. In any map, list, or tree view, double-click the Gator Module icon you wish to
manage;
Figure 2-1. Gator Module icon
or
1. In any map, list, or tree view, click the Gator Module you wish to manage, and
select Manage—>Node from the primary window menu bar, or select the
Manage Node toolbar button.
or
2-1
The Gator Module View
1. In any map, list, or tree view, click the right mouse button to select the Gator
Module you wish to manage, and on the resulting menu, click Manage.
Viewing Device Information
The Gator Module View window (Figure 2-2) provides a graphic representation
of the Gator Module, including a color-coded port display which immediately
informs you of the current configuration and status of the ports on the module.
Figure 2-2. Module View Window—GatorStar GX-M and GatorMIM CS
By clicking in designated areas of the graphical display, or by using the menu bar
at the top of the Module View window, you can access device-, board-, and
port-level information.
When you move the mouse cursor over a management “hot sp ot” the cursor icon changes
TIP
2-2 Viewing Device Information
into a “hand” ( ) to indicate that clicking in the current location will bring up a
management option.
Up to 24 ports can be displayed simultaneously on a module. If a module has a higher port
NOTE
density than 24 ports, Up and Down arrows will appear at the top and bottom of the port
stack so that you can scroll through the remaining ports.
Front Panel Infor matio n
The section below the main port display provides the following device
information:
Connection Status
This color-coded icon indicates the current state of communication between
NetSight Element Manager and the Gator Module.
• Green indicates the Gator Module is responding to device polls (valid
connection).
• Blue indicates an unknown contact status — polling has not yet been
established with the Gator Module.
The Gator Module View
• Red indicates the Gator Module is not r esponding to device polls (device is of f
line, or device polling has failed across the network for some other reason).
UpTime
The amount of time, in a days hh:mm:ss format, that the Gator Module has been
running since the last start-up.
Port Status
If management for your device supports a variable port display (see the Gator
Module Port Status Display, page 2-6), this field will show the display currently
in effect. If only a single port display is available -- or if the default view is in
effect -- this field will state Default.
MAC
The physical layer address assigned to the Gator Module’s Ethernet interface.
MAC addresses are hard-coded in the device, and are not configurable.
Firmware
The revision of device firmware stored in the Gator Module’s FLASH PROMs.
Boot Prom, Time, and Date
These fields are not supported.
IP
The Internet Protocol address assigned to the Gator Module is displayed in the
title bar; this field will display the IP address you have used to create the Gator
Module icon. IP addresses are assigned via Local Management.
Viewing Device Information 2-3
The Gator Module View
Menu Structure
By clicking on various areas of the Gator Module’s Module View display, you can
access menus with device-, board-, and port-level options, as well as utility
applications which apply to the device as a whole. Figure 2-3 displays the menu
structure and indicates how to use the mouse to access the various menus.
Device menu for
the GatorMIM CS
Port menu is
available fo r the
GatorMIM CS
only
Device menu for
the GatorStar
GX-M
The Device Menu
From the Device Menu at the Module V iew window menu bar, you can access the
following selections:
• Device Type displays a description of the device being modeled; see Viewing
the Device Type, page 2-7, for details.
• LocalTalk Statistics displays packets and errors forwarded across the Gator
Module in both numeric and pie chart form; see LocalTalk and GatorStar
Statistics, in Chapter 3, for more information.
• System Group allows you to manage the Gator Module via SNMP MIB II.
Refer to the Generic SNMP User’s Guide for further information.
Figure 2-3. Gator Module View Menu Structure
2-4 Viewing Device Information
The Gator Module View
• I/F Summary displays statistics for the traffic processed by each network
interface on your device; seeVi ewing I/F Summary Information, page 2-8, for
details.
• Exit closes the Gator Module View window.
In addition to the previously-mentioned selections, the GatorStar GX-M also
gives you access to the following selection:
• GatorStar Stat istics displays total repeater statistics for the GatorStar GX-M in
both numeric and pie chart format; see LocalTalk and GatorStar Statistics, in
Chapter 3, for more information.
The Utilities Menu
The Utilities Menu has the following selection:
• MIB Tools provides direct access to the device’s MIB information; refer to the
Tools Guide for a thorough explanation of the MIB Tools utility.
MIB Tools is also available from the Tools menu at the top of NetSight Element
Manager’s primary window.
The Help Menu
The Help Menu has the following three selections:
• MIBs Supported opens the Chassis Manager window, s ee The Chassis
Manager Window, page 2-6, for details.
• Chassis Manager Help opens a help window with information specifically
related to using the Chassis Manager and Module View windows.
• About Chassis Manager displays a window with the Chassis Manager
version number.
The Board Menus
The Board menu provides access to the following menu selection:
• Module Type displays a description of the selected board; see Viewing the
Module Type, page 2-7.
The Port Menus
The Port menu is available on the GatorMIM CS only, and has the following
selections:
• Description displays a description of the interface type; see Viewing the Port
Type, page 2-8, for details.
• Enable/Disable allows you to enable or disable the selected port; see Enabling
and Disabling Ports, page 2-14, for details.
Viewing Device Information 2-5
The Gator Module View
Gator Module Port Status Display
The Port Status display varies for each module type. The status conditions for the
GatorMIM CS are:
ON (Green) The port is on-line and forwarding packets
OFF (Red) The port has been disabled by management; no
? (Blue) The status of ports cannot be determined by the
The status conditions for the GatorStar GX-M are:
ENB (Yellow/Enabled) The port is enabled, but not connected to a
DIS (Red/Disabled) The port has been disabled by management; no
across the Gator Module from one network
segment to another.
traffic can be received or forwarded on this port.
software.
device; hence, no packets are being forwarded.
traffic can be received or forwarded on this port.
? (Blue/Unknown) The status of ports cannot be determined by the
NLK (Yellow/No Link) The port has been disabled automatically
The Chassis Manager Window
The Chassis Manager window, Figure 2-4, is a read-only window that displays the
MIBs and the MIB components — and, therefore, the functionality — supported
by the currently monitored device.
1. Select Help—>MIBs Supported in the menu bar. The Chassis Manager
window opens.
software.
because of excessive SWOP, activity, or
jabbering. You will be able to re-enable the port
when the offending condition no longer exists.
2-6 Viewing Device Information
The Gator Module does not
support MIB Components.
The MIBs which provide the
Gator Module’s functionality —
both propri etary MIBs and IETF
RFCs — are listed here
Figure 2-4. Chassis Manager Window
Viewing Hardware Types
Menu options at several levels provide specific information about the physical
characteristics of the Gator Module and its ports.
The Gator Module View
Viewing the Device Type
The Device Type displays a description of the device being modeled.
1. Select Device—>Device Type in the Module View menu bar. The Device
Type window (Figure 2-5) opens.
Viewing the Module Type
From the Board menu on the Gator Module Vi ew window, you can view a
description of the Gator Module type.
1. Click on the Board number to reveal the Board menu.
2. Click on Module Type. A Module Type window, similar to the examples shown
in Figure 2-6, opens describing the board type.
Figure 2-5. Device Type Windows
Viewing Device Information 2-7
The Gator Module View
Viewing the Port Type
You can view a brief description of the ports on your Gator MIM CS via the Port
menu; this option is not available for Gator Star GX-M ports.
1. Click on the appropriate Port to disp lay the Port menu.
2. Click Description. The Interface Description window, Figure 2-7, opens.
Figure 2-6. Sample Module Type Window
Figure 2-7. Sample Interface Description Window
Viewing I/F Summary Information
The I/F Summary option lets you view statistics for the traffic processed by each
network interface on your device. The window also provides access to a detailed
statistics window that breaks down Transmit and Receive traffic for each
interface.
To access the I/F Summary window:
1. Select Device—>I/F Summary on the Module View menu bar. The I/F
Summary window, Figure 2-8, opens.
2-8 Viewing Device Information
The Gator Module View
Figure 2-8. I/F Summary Window
The I/F Summary window provides a variety of descriptive information about
each interface on your device, as well as statistics which display each interface’s
performance.
Index
The index value assigned to each interface on the device.
Type
The type of the interface, distinguished by the physical /lin k protoc ol( s) runni ng
immediately below the network layer (e.g., ethernet-csmacd).
Description
A text description of the interface.
Physical Status
Displays the current physical status — or operational state — of the interface:
Online or Offline.
Logical Status
Displays the current logical status — or administrative state — of the interface:
Up or Down.
Interface Performance Statistics/Bar Graphs
The statistical values (and, where available, the accompanying bar graphs) to the
right of the interface description fields provide a quick summary of interface
performance. Y ou can select the statistical value you want to display and the units
in which you want those values displayed by using the two menu fields directly
above the interface display area, as follows:
Viewing Device Information 2-9
The Gator Module View
1. In the right-most menu field, click to select the unit in which you wish to
Bar graphs are only available when Load is the selected base unit; if you select Raw
NOTE
Counts or Rate, the Bar Graph column will be removed from the interface display.
2. Once you have selected the base unit, click in the left-most field to specify the
After you select a new display mode, the statistics (and graphs, where applicable)
will refresh to reflect the current choice, as described below.
Raw Counts
The total count of network traffic received or transmitted on the indicated
interface since device counters were last reset. Raw counts are provided for the
following parameters:
display the selected statistic: Load, Raw Counts, or Rate.
statistic you would like to display . Note that the options available from this
menu will vary depending on the base unit you have selected.
In Octets Octets received on the interface, including framing
characters.
In Packets Packets (both unicast and non-unicast) received by the
device interface and delivered to a higher-layer protocol.
In Discards Packets received by the device interface that were
discarded even though no errors prevented them from
being delivered to a higher layer protocol (e.g., to free up
buffer space in the device).
In Errors Packets received by the device interface that contained
errors that prevented them from being delivered to a
higher-layer protocol.
In Unknown Packets received by the device interface that were
discarded because of an unknown or unsupported
protocol.
Out Octets Octets transmitted by the interface, including framing
characters.
Out Packets Packets transmitted, at the request of a higher level
protocol, by the device interface to a subnetwork address
(both unicast and non-unicas t ).
Out Discards Outbound packets that were discarded by the device
interface even though no errors were detected that
would prevent them from being transmitted. A possible
reason for discard would be to fr ee up buff er space in the
device.
2-10 Viewing Device Information
The Gator Module View
Out Errors Outbound packets that could not be transmitted by the
device interface because they contained errors.
Load
The number of bytes processed by the indicated interface during the last poll
interval in comparison to the theoretical maximum load for that interface type
(10 Mbps for standard Ethernet). Load is further defined by the following
parameters:
In Octets The number of bytes received by this interface, express ed
as a percentage of the theoretical maximum load.
Out Octets The number of bytes transmitted by this interface,
expressed as a percentage of the theoretical maximum
load.
When you select this option, a Bar Graph field will be added to the interface
display area; this field is only available when Load is the selected base unit.
Rate
The count for the selected statistic during the last poll interval. The available
parameters are the same as those provided for Raw Counts. Refer to the Raw
Counts section, page 2-10, for a complete description of each parameter.
Viewing Interface Detail
The I/F Statistics window provides detailed statistical information — counts for
both transmit and receive packets, and error and buffering information — for
each individual interface. Color-coded pie charts also let you graphically view
statistics for both received and transmitted Unicast, Multicast, Discarded, and
Error packets.
To open the Interface Statistics window:
1. In the I/F Summary window, click to select the interface for which you would
2. Click Detail. The appropriate I/F Statistics window, Figure 2-9, opens.
like to view more detailed statistics.
Viewing Device Information 2-11
The Gator Module View
Figure 2-9. Interface Detail Window
Three informational fields appear in the upper portion of the window:
Description
Displays the interface description for the currently selected interface.
Address
Displays the MAC (physical) address of the selected interface.
Type
Displays the interface type of the selected port (e.g., ethernet-csmacd).
The lower portion of the window provides the following transmit and receive
statistics. The first four statistics are also graphically displayed in the pie charts.
Unicast
Displays the number of packets transmitted to or received from this interface tha t
had a single, unique destination address. These statistics are displayed in the pie
chart, color-coded green.
Non-Unicast
Displays the number of packets transmitted to or received from this interface tha t
had a destination address that is recognized by more than one device on the
network segment. The multicast field includes a count of broadcast packets —
those that are recognized by all devices on a segment. These statistics are
displayed in the pie chart, color-coded dark blue.
2-12 Viewing Device Information
The Gator Module View
Discarded
Displays the number of packets which were discarded even though they
contained no errors that would prevent transmission. Good packets are typically
discarded to free up buffer space when the network becomes very busy; if this is
occurring routinely, it usually m eans that network traffic is overwhelming the
device. To solve this problem, you may need to re-configure your bridging
parameters, or perhaps re-configure your network to add additional bridges or
switches.
These statistics are displayed in the pie chart, color-coded magenta.
Error
Displays the number of packets received or transmitted that contained errors.
These statistics are displayed in the pie chart, color-coded red.
Unknown Protocol
Displays the number of packets received which were discarded because they were
created under an unknown or unsupported protocol.
Packets Received
Displays the number of packets received by the selected interface.
Transmit Queue Size
Displays the number of packets currently queued for transmission from this
interface. The amount of device memory devoted to buffer space, and the traffic
level on the target network, determine how large the output packet queue can
grow before the MRXI will begin to discard packets.
Packets Transmitted
Displays the number of packets transmitted by this interface.
Making Sense of Detail Statistics
By using a few simple calculations, the I/F Statistics window can give you an idea
of the interface’s activity level and how the interface is performing .
To calculate the percentage of input errors:
Received Errors /Packets Received
(Received only)
(Received only)
(Transmit only)
(Transmit only)
To calculate the percentage of output errors:
Transmitted Errors /Packets Transmitted
To calculate the total number of inbound and outbound discards:
Received Discards + Transmitted Discards
To calculate the percentage of inbound packets that were discarded:
Received Discards /Packets Received
Viewing Device Information 2-13
The Gator Module View
To calculate the percentage of outbound packets that were discarded:
Transmit Discards /Packets Transmitted
The Interface Statistics window does not offer Disable or Test options. These options are
NOTE
available in the Interface Group window, which can be accessed via the System Group
window (select System Group from the Device menu). Refer to your Generic SNMP
User’s Guide for more information on the System Group and Interface Group windows.
Enabling and Disabling Ports
From the Port menus on the GatorMIM CS Module, you can enable and disable
any individual ports.
To enable or disable a port:
1. Click on the desired Port to display the Port menu.
2. Click Enable to enable the port, or Disable to disable the port. Your port will
now be enabled or disabled as desired.
2-14 Enabling and Disabling Ports
Chapter 3
LocalTalk and GatorStar Statistics
LocalTalk Statistics window; Total Repeater Statistics window
Viewing LocalTalk Statistics
The LocalTalk Statistics window (Figure 3-1) displays accumulated statistics and
error breakdowns at the device level for the LocalTalk side of the Gator module.
Statistics are displayed in numeric form and in graphic form as a pie chart.
1. Select Device—>LocalTalk Statistics in the Module View menu bar. The
LocalTalk Statistics window, as shown in, Figure 3-1, opens.
Figure 3-1. LocalTalk Statistics
3-1
LocalTalk and GatorStar Statistics
The following packet and error statistics appear within the LocalTalk Statistics
window:
Packets Fields
The Packet Fields display general performance information on the LocalTalk
interfac e are as follows:
In Packets The total number of good packets received by the
Out Packets The total number of packets transmitted from the
Hard Errors
Hard errors are error conditions caused by physical layer problems, such as faults
in the hardware, equipment, or wiring. Hard error fields are as follows:
In Errors The total number of packets containing errors received
Collisions The total number of collisions assumed on the LocalTalk
LocalTalk interface.
LocalTalk interface.
on the LocalTalk interface. In Errors are color-coded
magenta.
interface due to the lack of a lapCTS (link access protocol
Clear To Send) reply. Collisions are color-coded red.
Soft Errors
Soft errors are error conditions caused by corrupted data signals, such as failure
along the transmission path. Soft error fields are as follows:
In No Handlers The total number of good packets received on the
LocalTalk interface for which there was no protocol
handler. In No Handlers are color-coded green.
In Length Errors The total number of packets received on the LocalTalk
interface in which the actual packet length did not match
the length specified in the header. In Length Errors are
color-coded yellow.
Defers The total number of times the LocalTalk interface
deferred to other packets (postponed sending a packet
until after packets from other ports had already been
sent). This usually indicates tha t the network was busy
when the port wanted to send data. The link has to be
idle for at least 400 microseconds before it will start to
transmit.
No Data Errors The total number of times the LocalTalk interface
received a lapRTS (link access protocol Request To Send)
packet and expected a data packet, but did not receive
any data packets.
3-2 Viewing LocalTalk Statistics
Random CTS Errors The total number of times the LocalTalk interface
received a lapCTS packet that was not solicited by a
lapRTS packet.
FCS Errors The total number of times the LocalTalk interface
received a packet with an FCS (Frame Check Sequence)
error. When a packet is transmitted, the MAC layer of the
transmitting device computes an FCS value based on the
contents of the packet, and appends that value to the
packet. The receiving station performs the same
computation. If the FCS values differ, the packet is
assumed to be corrupted.
Gator Total Repeater Statistics
The Gator Total Repeater Statistics window displays the total number of repeater
statistics and error breakdowns at the device level for the GatorStar GX-M only.
The pie chart to the right of the statistics text boxes allows you to graphically view
the statistics.
LocalTalk and GatorStar Statistics
By using the Total and Delta option buttons, you can change the time period
during which statistical data is collected. Total gathers data from the devi ce and
updates it at each subsequent polling interval. After the completion of the current
polling cycle plus one complete polling cycle, the window will display the sum of
statistics processed since the device was last restarted. Delta gathers data during
the last polling interval (after the completion of the current polling cycle plus two
more polling cycles). These counts are refreshed after each polling cycle.
1. Select Device—>GatorStar Statistics in the Module View menu bar. The
Gator Total Repeater Statistics window, Figure 3-2, opens.
Figure 3-2. Gator Total Repeater Statistics Window
Gator Total Repeater Statistics 3-3
LocalTalk and GatorStar Statistics
The following fields appear within the Gator Total Repeater Statistics window:
Packets Fields
Total Packets The total number of packets processed by the
Error Fields
Total Jabbers The total number of packets since the last reset
Total Swops The total number of SWOP (Sync Without
Spurious Interrupts The total number of spurious (invalid) interrupts
device since the last reset. Total Packets are
color-coded green.
that were oversized (greater than 1518 bytes —
a Giant packet), and had either a non-integral
number of bytes (alignment error) or a bad frame
check sequence (CRC error). Total Jabbers are
color-coded yellow.
Packet) conditions since the last reset. Total
Swops are color-coded magenta.
on the device since the last reset.
Received Packets The total number of good packets received with
no errors since the last reset.
Too Long Packets The total number of packets greater than the
maximum allowable number seen on the device
since the last reset.
Alignment Errors The total number of misaligned packets seen on
the device since the last reset. A misaligned
packet is one that does not contain an integral
number of bytes.
Received Aborts The number of packets that were aborted during
the receive process since the last reset.
CRC Errors The total number of packets with CRC (Cyclical
Redundancy Check) errors seen on the device
since the last reset. CRC errors occur when the
element responsible for either the transmit or
receive CRC calculation is malfunctioning,
which causes good packets to be discarded as
errors.
Overrun Errors The total number of overrun conditions seen on
the device since the last reset. An overr un occurs
when the processor cannot keep up with the
inbound byte stream.
CD Lost The total number of CD Lost (Carrier Detect
Lost) errors seen on the device since the last
reset.
3-4 Gator Total Repeater Statistics
Index
A
Alignment Errors 3- 4
B
Board Menus 2-5
Boot Prom
revision 2-3
Buffer space 2-13
C
Cancel button 1-5
Carrier Detect Lost 3-4
CD Lost 3-4
Clear to send 3-2
Collisions 3-2
Color-coded port display 2-2
Command buttons 1-5
Connection Status 2-3
CRC Errors 3-4
D
Defers 3-2
Delta 3-3
Device 1-4
Device Menu 2-4
Device name 1-4
Device Type 2-4, 2-7
Disabling a port 2-14
Discarded packets 2-13
E
Enabling a port 2-14
Exit 2-5
F
FCS Errors 3-3
firmware versions 1-7
G
GatorMIM CS 1-1
GatorStar GX-M 1-1
GatorStar Statistics 2-5
Global Technical Assistance Center 1-6
H
Help button 1-5
Help Menu 2-5
I
I/F Summary window 2-9
interface description fields 2-9
interface performance statistics 2-9
In Errors 3-2
In Length Errors 3-2
In No Handlers 3-2
In Packets 3-2
Interface Group window 2-11
IP address 1-4, 2-3
L
Load 2-11
LocalTalk Statistics 2-4
Logical Statu s 2-9
M
MAC address 1-5, 2-3
Menu structure 2-4
Mouse usage 1-3
Multicast (Non -Un ica st ) 2-12
N
No Data Errors 3-2
Non-Unicast (Multicast) 2-12
Index-1
Index
O
OK button 1-5
Out Packets 3-2
Overrun Errors 3-4
P
Packets Received 2-13
Packets Tr ansmitted 2-13
Physical Status 2-9
Port display
color codes 2-2
Port Menus 2-5
Port type 2-8
R
Random CTS Errors 3-3
Rate 2-11
Raw Counts 2-10
Readme 1-7
Received Aborts 3-4
Received Packets 3-4
Request to send 3-2
V
View 2-1
S
Set button 1-5
Soft Errors 3-2
Spurious Interrups 3-4
Status conditions 2-6
Sync without packet 3-4
System Group 2-4
T
Technical support 1-6
Too Long Packets 3-4
Total 3-3
Total Jabbers 3-4
Total Packets 3-4
Total Repeater Statistics 3-3
Total Swops 3- 4
Transmit Queue Size 2-13
U
Unicast 2-12
Unknown Protocol 2-13
UpTime 2-3
Utilities Menu 2-5
Index-2
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